Answer:
Savannah river
Step-by-step explanation:
The Savannah River is the main river found in South Carolina and Southeastern part of the country as a whole. It has two tributaries called the Tugaloo River and the Chattooga River which passes through it.
It serves a source of drinking in South Carolina and major parts of Georgia. It also used to cool power plants and provide provides drinking water to Savannah and Augusta.